Sustainable Winegrowing With Vineyard Team

“When smoke impact in the vineyard is great enough to impact the fruit and causes inferior wine, then we start calling it smoke taint.” explains Anita Oberholster, Professor Cooperative Extension Enology in the Department of Viticulture and Enology at the University of California, Davis. During a wildfire event, the lignin in vegetation is broken down, releasing volatile phenols. While there are naturally occurring phenols in grapes, this release causes an excess which can impact the final product. Some tainted wines smell like camp fire, smoky, BBQ, and even bacon. New research shows there is an aftertaste, an aroma you perceive in the back of your throat, that creates that ash tray character. Fruity aromas natural to some varieties can mask smoky aromas quite well. While green aromas like green pepper bring out the undesirable smoky traits. Some varieties may stand up to smoke taint better than others but there has not been a definitive research project on this yet due to the complexity of the testing proce